221102131043 has 4 divisors (see below), whose sum is σ = 221159370768. Its totient is φ = 221044891320.

The previous prime is 221102131021. The next prime is 221102131109. The reversal of 221102131043 is 340131201122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340131201122 = 2 ⋅170065600561.

It is a cyclic number.

It is not a de Polignac number, because 221102131043 - 2¹⁰ = 221102130019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221102731043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28614068 + ... + 28621793.

It is an arithmetic number, because the mean of its divisors is an integer number (55289842692).

Almost surely, 2^221102131043 is an apocalyptic number.

221102131043 is a deficient number, since it is larger than the sum of its proper divisors (57239725).

221102131043 is an equidigital number, since it uses as much as digits as its factorization.

221102131043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57239724.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 221102131043 its reverse (340131201122), we get a palindrome (561233332165).

The spelling of 221102131043 in words is "two hundred twenty-one billion, one hundred two million, one hundred thirty-one thousand, forty-three".